Pump



Patented Apr. 13, 1937 UNITED STATES PATENT OFFICE PUm William J. Conery and Albert Nelson, San Jose, Calif.

Application April 20,

1 Claim.

5 provide a pump of the character indicated that will be economical to manufacture, simple in form and construction, that has consistently low operating costs, and that is durable, compact, and highly emcient in its practical application.

It is also an object of the invention to provide a pump of the character indicated wherein the head of water in a well casing is built up to a higher pressure by impeller means within the pump and utilized to induct water into the pump 1.; from the well and feed the same to the said impeller means.

These objects are attained by means of the mechanism illustrated in the accompanying drawing, in which,--

Figure 1 is a vertical section through a pump embodying the invention, with parts broken away.

Figure 2 is a section on line 2-2 of Figure 1.

Figure 3 is a section on line 3-3 of Figure 1.

Referring now more particularly to the drawing, the pump head is shown in part at l, with the base plate of the motor operating the pump shaft indicated at 2, and the shaft at 3, with the shaft bearing at 4, supported on plate 5 of the 30 head as at 6.

Depending from plate 5 and in concentric relation to the axis of the shaft is an impeller bowl I, the upper portion of the bowl having an opening 8 therein closed by part 9 of the bearing 4,

and its lower portion having a threaded opening ill to receive the upper end of pipe II as shown. An impeller I2 is disposed within the bowl and is mounted upon and driven by the shaft 3 at l3, the neck of the impeller communicating with the 40 pipe ii at H.

The head I is provided with a chamber l 5 having a discharge outlet at l6 and encompassing the pipe I I as at I! in concentric relation thereto,

' the bowl 1 discharging into the said chamber as at l8.

45 Threaded into the neck portion I 9 of head i and encompassing pipe ii is a casing 20, and an injector is threaded into the lower end of the casing 20 as at 2|.

The injector comprises a plate 22 having two nearly semicircular passages 23 formed therethrough, these passages being separated by a cross bar 24. The plate also has a depending annular flange 25 formed thereon in concentric 55 relation to its axis and communicating with said passages 23, a check valve at 28 permitting the flow of water into and through said passages.

The passages 23 are projected upwardly by means of enclosing walls 21 formed on plate 22 '1936, Serial No. 75,366

and the cross bar 24 and discharge into a circular chamber 28.

In the center of the chamber is disposed an upwardly directed injector nozzle 29, this nozzle rising from a part 30 forming the top of the passage 3| between the inner walls 21.

Inserted between and connecting the wall 32 enclosing chamber 28 and the lower end of pipe Ii is a Venturi tube 33.

In operation the impeller l2 receives water in chamber l through the operation of the impeller.

The normal operation of impeller l2 serves to move the water upwardly and out of pipe ll thereby relieving the pressure therein, while the jet operating as described serves to lift water through passages 23 and chamber 28 to the pipe H.

'An important feature of this assembly is that the pipe II is completely under water when the pump is in operation so that no leakage ofair into the pipe can possibly take place.

It is to be understood, of course, that while but one specific embodiment of the invention is herein shown anddescribed changes in form, construction, and-method of assembly and operation claim.

We claim:

A pump of the character described comprising, a pump head having a motor mounted thereon provided with a vertically disposed drive shaft extending downwardly into said head, an impeller mounted on said shaft, an impeller bowl formed in said head to encompass the impeller, a discharge chamber formed in the head to encompass the impeIler-bowl and to receive water discharged therefrom and 9. depending casing mounted on the head in open communication with said chamber, a feed pipe depending from the impeller bowl in open communication therewith and concentrically disposed within said casing, and an injector inserted between the lower ends of the casing and feed pipe, the injector including a Venturi tube communicating with the pipe and the exterior of the casing, and an ejector nozzle communicating with the discharge chamber between the pipe and easing.

may be made within the scope of the appended wILmnM J. CONERY. ALBERT NELSON. 

